Ultraflex ADR Pediatric Knee Joint is useful for making personalized orthoses to address walking problems, weak muscles and joints, and instability, which improves movement. Orthoses with this joint are final and not meant for stretching. The sit-to-stand slide lock/safety release at the joint is easy to use and doesn't require much effort for patients with good understanding and hand skills. It works similarly to the KO USS but without a cable and lever.